Peaches Geldof, the daughter of Bob Geldof, is under police investigation after breaking a court order by naming two women whose babies were abused by Lostprophets singer Ian Watkins.

In an impassioned Twitter rant, the mother of two wrote that she was "sickened" when she heard of the case of Watkins, who admitted the attempted rape of a baby earlier this week.

Watkins pleaded guilty to two counts of attempted rape and 12 other offences. His co-defendants were the mothers of the victims.

Under UK law, victims of sex offences have lifetime anonymity and publication of information that could identify them is a criminal offence.

However Geldof tweeted the names, saying she had seen them "on several different websites" and believed the names had been "released" by the Welsh court hearing the case.

She was quickly warned by fellow Tweeters that she was in breach of a court order, however according to the UK Press Gazette the offending message remained online for four hours.

The Gazette was told by detective chief inspector Peter Doyle from South Wales Police that "we are currently in consultation with the Crown Prosecution Service regarding the matter and will take action if appropriate."

"Our primary objective ... remains the safeguarding of vulnerable people and children," Doyle said. "Victims of sexual abuse have a right to anonymity in order to protect their future welfare."

A spokesperson for the CPS confirmed they were liaising with police over the naming of the victims.

The offending tweets have been removed from Geldof's timeline. However in other tweets she pleaded for others to name the women involved.

I can't even bring myself to comment on Watkins admitting raping babies either. As a mother of two babies myself all I can think of as I-